Our holdings are strongest for the 18th and19th centuries, though there are some collections that cover the medieval and early modern periods or the 20th century.
Newspaper databases are often a great starting point for those new to locating and using historical primary sources.
The Special Collections Librarian and I both call these sorts of databases hodgepodge collections for lack of a better term, as they are collections of materials that cover substantial time frames and a wide range of topics, plus contain a variety of source types.
Databases with a focus on any aspect of British culture or society.